Psalms 73:21

“Thus my heart was grieved, etc.] Not with his own sins, nor with the sins of the wicked, but at their prosperity; for this is an account of himself, while under the temptation, and before he went into the sanctuary of the Lord; or when he was “leavened” f1029, with the old leaven of wickedness, and envy, and indignation; he was in a ferment, so Plautus f1030 uses the phrase for being in anger and wrath; he swelled, as what is leavened does, against God and his providence: or was “soured” f1031; he was out of humour and angry with God, or was exasperated and provoked at the favours bestowed upon the wicked. Some render it “inflamed” f1032, made hot; not with the love of God, and meditation…”

“Thus my heart was grieved - literally, and more expressively, “was soured.” The meaning is, that his heart was grieved, pained, dissatisfied. His mind was embittered, and he was rendered unhappy, by the views which he cherished about God, as doubting the wisdom and justice of his dealings with people - and about people, as being envious at their prosperity. And I was pricked in my reins - The reins are often in the Scriptures represented as the seat of the thoughts or affections. See the notes at Psalms 7:9. The word rendered “pricked” means to sharpen, as a sword; and then, to pierce and penetrate as a sword does. The idea is, that these thoughts, so distressing and painful, seemed to be…”

“Pricked - I was deeply wounded with disquieting thoughts. Psalms 73:22”

“73:21-22 The psalmist’s feelings about the prosperity of the wicked had given him a bitter spirit.”

“my heart: Psa 73:3, Psa 37:1, Psa 37:7 in my: Job 16:13; Lam 3:13 Psalms 73:22”